diff --git a/server/AyaNova/PickList/PickListParams.cs b/server/AyaNova/PickList/PickListParams.cs
index 7a93f950..66a84dd6 100644
--- a/server/AyaNova/PickList/PickListParams.cs
+++ b/server/AyaNova/PickList/PickListParams.cs
@@ -5,15 +5,15 @@ using AyaNova.Biz;
 namespace AyaNova.PickList
 {
 
-/*
-     /// <param name="params">The AyaType object type to select from</param>
-        /// <param name="query">The query to filter the returned list by. Query text as provided will be case sensitively matched to all templated fields. 
-        /// Independantely of this, if an addition space separated string that begins with two consecutive periods is encountered that will be considered a separate match to the TAGS collection of each object
-        /// So a tag query might be entered as "..zon some" which would match all tags LIKE 'zon' and template fields LIKE 'some'</param>
-        /// <param name="inactive">Include inactive objects in the returned list </param>
-        /// <param name="preIds">Return only specific items (for pre-selected items on forms) </param>
-        /// <param name="variant">Some lists optionally take a variant string, e.g. User type "inside","outside" etc </param>
-*/
+    /*
+         /// <param name="params">The AyaType object type to select from</param>
+            /// <param name="query">The query to filter the returned list by. Query text as provided will be case sensitively matched to all templated fields. 
+            /// Independantely of this, if an addition space separated string that begins with two consecutive periods is encountered that will be considered a separate match to the TAGS collection of each object
+            /// So a tag query might be entered as "..zon some" which would match all tags LIKE 'zon' and template fields LIKE 'some'</param>
+            /// <param name="inactive">Include inactive objects in the returned list </param>
+            /// <param name="preIds">Return only specific items (for pre-selected items on forms) </param>
+            /// <param name="variant">Some lists optionally take a variant string, e.g. User type "inside","outside" etc </param>
+    */
     public sealed class PickListParams
     {
 
@@ -31,6 +31,15 @@ namespace AyaNova.PickList
 
         [FromBody]
         public string ListVariant { get; set; }
+
+        public PickListParams()
+        {
+            AyaType = AyaType.NoType;
+            Query = string.Empty;
+            Inactive = false;
+            PreselectedIds = new List<long>();
+            ListVariant = string.Empty;
+        }
     }
 
 }
\ No newline at end of file